Rye Starter Not Working

This is my second attempt at making a rye starter and it's not working. I purchased organic rye flour from Whole Foods (bulk bins) and using Dole pineapple juice (canned, not from concentrate). This should be very straightforward, but I have no idea why this is not working.

On my first attempt, I used Peter Reinhart's updated pineapple solution and after 4 days, nothing happened. At this point, I should have seen at least some change. Feeling discouraged, I decided to start another starter using this method[1] - I'm on day 3 and all I have is a paste. On day 5, I threw out the first starter because it did not seem like it would ever work.

The temperature in my kitchen is 72 degrees, I cover the bowl with cling film, and stir about 2-3 times a day.